diff options
| -rw-r--r-- | drivers/scsi/libata-scsi.c | 17 |
1 files changed, 9 insertions, 8 deletions
diff --git a/drivers/scsi/libata-scsi.c b/drivers/scsi/libata-scsi.c index 45a49be6504..32c1df69091 100644 --- a/drivers/scsi/libata-scsi.c +++ b/drivers/scsi/libata-scsi.c @@ -3005,14 +3005,16 @@ static int ata_scsi_user_scan(struct Scsi_Host *shost, unsigned int channel, } /** - * ata_scsi_dev_rescan - initiate scsi_rescan_device() - * @data: Pointer to ATA port to perform scsi_rescan_device() + * ata_scsi_dev_rescan - initiate scsi_rescan_device() + * @data: Pointer to ATA port to perform scsi_rescan_device() * - * After ATA pass thru (SAT) commands are executed successfully, - * libata need to propagate the changes to SCSI layer. + * After ATA pass thru (SAT) commands are executed successfully, + * libata need to propagate the changes to SCSI layer. This + * function must be executed from ata_aux_wq such that sdev + * attach/detach don't race with rescan. * - * LOCKING: - * Kernel thread context (may sleep). + * LOCKING: + * Kernel thread context (may sleep). */ void ata_scsi_dev_rescan(void *data) { @@ -3023,8 +3025,7 @@ void ata_scsi_dev_rescan(void *data) for (i = 0; i < ATA_MAX_DEVICES; i++) { dev = &ap->device[i]; - if (ata_dev_enabled(dev)) + if (ata_dev_enabled(dev) && dev->sdev) scsi_rescan_device(&(dev->sdev->sdev_gendev)); } } - |